Alcohol is being investigated as a possible factor in a rollover crash Monday evening on the South Lawrence Trafficway, which sent three Lawrence residents to hospitals, a Kansas Highway Patrol trooper said on Thursday.

The vehicle was traveling eastbound on the Kansas Highway 10 bypass, just east of the K-10 and Clinton Parkway intersection, when the 19-year-old driver lost control and rolled the vehicle several times, the KHP said. The crash happened about 5:15 p.m. Monday.

“At this point, it just looks like there was some sort of abrupt maneuver by the driver that caused the vehicle to roll,” Brady Flannigan, the KHP trooper investigating the accident, said Thursday. “What caused the driver to make that maneuver, we’re not sure.”

The driver of the 1997 Ford Explorer, Adolfo Remigio-Diaz, was transported to Stormont-Vail Regional Health Center in Topeka, where a spokeswoman on Thursday said his condition had been upgraded from serious to satisfactory.

Two passengers in the car were not wearing seat belts and received more severe injuries in the crash, Flannigan said.

Noe Martinez, 16, was ejected from the vehicle and Mario Remigio-Diaz, 21, was sitting in the back of the vehicle. Both were transported to Kansas University Hospital in Kansas City, Kan., where a hospital spokesman did not release information on their conditions Thursday.

Flannigan said citations would likely be issued in the single-vehicle crash, though it hadn’t been determined what the charges would be.